42 lines
1.4 KiB
ArmAsm
42 lines
1.4 KiB
ArmAsm
/*
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* Copyright (c) 2008 Brian Swetland
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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.global dcc_putc
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.global dcc_getc
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#if defined(ARM_ISA_ARMV6) || defined(ARM_ISA_ARMV7)
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dcc_getc:
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mrc 14, 0, r0, c0, c1, 0
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tst r0, #(1 << 30)
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moveq r0, #-1
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mrcne 14, 0, r0, c0, c5, 0
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bx lr
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dcc_putc:
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mrc 14, 0, r15, c0, c1, 0
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mcrcc 14, 0, r0, c0, c5, 0
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movcc r0, #0
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movcs r0, #-1
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bx lr
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#endif
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